Scotch and Yoke Pneumatic Actuator Ball Valve
The DBV ball valve pneumatic device is powered by compressed air,enters the cylinder and pushes the fork-type piston to move. The linear motion of the piston is converted into the rotary motion of the disc through the fork, and the disc drives the output shaft to rotate, thereby realizing the control of the valve.
When the compression controller enters the pneumatic actuator from the nozzle A, the gas pushes the double piston to move linearly to both ends (cylinder head end), the gear on the piston drives the gear on the rotating shaft to rotate 90° counterclockwise, and the valve is opened. . At this time, the gas at both ends of the pneumatic actuator is exhausted with the nozzle B. On the contrary, when the compressed air enters the two ends of the pneumatic actuator from the nozzle B, the gas pushes the double-hu oh oh race to the middle to move in a straight line, the gear on the piston drives the gear on the rotating shaft to rotate 90° clockwise, and the valve is closed. closure. At this time, the gas in the middle of the pneumatic actuator is discharged with the nozzle A. The above is the standard transmission principle.